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Evgesh-ka [11]
3 years ago
12

PLEASE HELP ASAP!!!!!! What should each experiment only have one of? variable or constant

Physics
2 answers:
d1i1m1o1n [39]3 years ago
4 0
Variable - meaning one element, feature or factor able to change
slega [8]3 years ago
3 0

Answer:

the answer should be a constant

hope this helps!!

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A 48.0-kg skater is standing at rest in front of a wall. By pushing against the wall she propels herself backward with a velocit
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Answer:

F = 47.6 N

Explanation:

  • Newton's 2nd law can be expressed as the rate of change of the total momentum, respect of time, as follows:

       F = \frac{\Delta p}{\Delta t}

  • So, in order to find the average force exerted by the skater on the wall, we can find the change in momentum due to the force exerted by the wall (which is equal and opposite to the one exerted by the skater), and  divide it by the time interval , as follows:

       F_{wall} = \frac{\Delta p}{\Delta t} =\frac{(48.0 kg*(-1.06m/s)}{1.07s} = -47.6 N

       ⇒ Fsk = 47.6 N (normal to the wall)

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3 years ago
A copper atom has an atomic number of 29 and an atomic mass of 64. What
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Explanation:

Answer is B.

B. It has a central nucleus composed of 29 protons and 35 neutrons,surrounded by an electron cloud containing 29 electrons.

I hope it's helpful!

3 0
2 years ago
Where would you find an inclined plane in a fan
ivanzaharov [21]
The blades that spin around in the fan, because they are flat and produce work
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3 years ago
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You drive at 195 miles down the 101 freeway at 65 miles per hour. How long did it take? time =
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According to my calculations, if you drive an average of 65 miles per hour, with 0 minutes of stop-time, you should reach your destination in 3 hours and 0 minutes.

Explanation:

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A 5-kg concrete block is lowered with a downward acceleration of 2.8 m/s2 by means of a rope. The force of the block on the Eart
maksim [4K]

When the body touches the ground two types of Forces will be generated. The Force product of the weight and the Normal Force. This is basically explained in Newton's third law in which we have that for every action there must also be a reaction. If the Force of the weight is pointing towards the earth, the reaction Force of the block will be opposite, that is, upwards and will be equivalent to its weight:

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3 years ago
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